Intel Xeon E5 2620 's Advantages
Higher base frequency (2GHz vs 1.8GHz)
Intel Xeon E5 2630L v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (20MB vs 15MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (55W vs 95W)